ACUITY Instruments: Performance Automotive Products

1/8 NPT to -8 O-Ring Boss (ORB) Adapter

1/8 NPT to -8 O-Ring Boss (ORB) Adapter - Main image
$11.97 $19 In stock

Category: Automotive Parts and Accessories

SKU: 1913-F05
  • Fits in all fuel rails and other fuel system components that accept -8 ORB fittings
  • Adapts -8 ORB ports to 1/8 NPT for use with pressure gauges or sensors
  • 7075-T6 Aluminum construction for added strength over traditional 6061-T6 fittings 
  • Anodized for durability
  • Flanged hex to help avoid wrench damage during installation
  • Supplied with ethanol-safe FKM o-ring
  • 7/8" Hex Drive

Description

ACUiTY's 1/8 NPT to -8 O-Ring Boss (ORB) adapter is made from 7075-T6 aluminum for strength, and its silver anodized finish ensures high cosmetic quality and resistance to oxidation. It's a great option for those wanting to discretely mount a fuel pressure gauge to the side of a fuel rail or fuel pressure regulator. These were designed for use with ACUiTY's K-Series Fuel Rails, but they are perfect for use in any gas, ethanol, or gas/ethanol mix fuel system where a -8 ORB port must be adapted to a 1/8 NPT Port (which is a common size used for sensors and fuel pressure gauges). The fitting comes supplied with a -908 FKM o-ring that is gasoline and ethanol (and E85, etc) compatible. Additionally, each fitting is designed with a flange at the base of the 7/8" hex to help protect against scratching the part the fitting is being threaded into during tightening. 

If replacement o-rings are needed, order ACUiTY part number 1913-F08 (which includes 5pcs of -908, FKM O-Rings).

See below for examples of the fitting used to adapt fuel pressure regulators onto ACUiTY's K-Series Fuel Rail (1913-F05 fitting comes with fitting and o-ring only, gauge and fuel rail sold separately)

1/8 NPT fuel pressure gauge adapter for -8 ORB Port1/8 NPT fuel pressure gauge adapter for -8 ORB Port

1/8 NPT fuel pressure gauge adapter for -8 ORB Port1/8 NPT fuel pressure gauge adapter for -8 ORB Port

1/8 NPT fuel pressure gauge adapter for -8 ORB Port1/8 NPT fuel pressure gauge adapter for -8 ORB Port

1/8 NPT fuel pressure gauge adapter for -8 ORB Port1/8 NPT fuel pressure gauge adapter for -8 ORB Port

Fitment

Designed to fit standard -8 o-ring boss (ORB) ports found on ACUiTY's K-Series fuel rails as well as many other aftermarket fuel rails and fuel pressure regulators.

Contents

  • (1) 1/8 NPT to -8 o-ring boss adapter
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Customer Reviews (4.8 / 5 · 5 reviews)

Jason ★★★★★

Machined beautifully from 7075 aluminum, this adapter threaded right into my fuel rail without any binding or leaks. Using it with a pressure sensor for tuning, the -8 ORB to 1/8 NPT conversion is exactly what I needed.

Joshua E. ★★★★★

Finally, a proper adapter that seals up tight on my fuel rail without leaking. The -8 ORB to 1/8 NPT threading is exactly what I needed for adding a pressure sensor. No more guessing PSI.

Emma N. ★★★★★

The 7075-T6 aluminum feels way sturdier than the cheaper adapters I've used before, and the threads went in clean without any cross-threading. I've got it running my fuel pressure gauge off the -8 ORB port and it's been dry for two weeks now.